Cunning Single Lady (Cantonese) - 別有用心單身女
Description:
Na Ae-ra grew up believing she was born to be only pretty and not smart.While working at her family's restaurant, she falls in love with Cha Jung-woo, a geeky engineering graduate student studying to enter civil service. Na Ae-ra wants to become a housewife, and after Jung-woo promises that she will be, they get married.During their 100th day wedding anniversary, Jung-woo announces that he has quit his job because he has an idea for a business. Jung-woo's businesses keep failing and Ae-ra struggles to keep them afloat by working multiple jobs. After secretly suffering a miscarriage from the stress of being the sole breadwinner and living in poverty, Ae-ra divorces Jung-woo after four years of marriage. Three years after the divorce, Ae-ra discovers that Jung-woo has become fabulously successful and wealthy, while she is still paying debts that accrued during their marriage. The fun begins when Ae-ra schemes for revenge, with Jung-woo believing that Ae-ra wants him back because he has become wealthy.

學歷普通、職業一般的羅愛羅(李珉廷飾),一心渴望自由、灑脫的人生,於是嫁給擁有鐵飯碗的公務員車政宇(朱相昱飾),以為從此能過上想要的生活。豈料結婚未久,政宇突然辭職創業,愛羅雖然心感不安,卻一直身兼數職辛苦賺錢,以支持政宇。無奈政宇接二連三地失敗,令愛羅身心俱疲、心灰意冷,終向窮困的生活投降,與政宇離婚。政宇不堪在最潦倒之時被抛棄,對愛羅充滿了怨恨。

離婚後的三年間,兩人的命運軌跡截然不同。愛羅日子越過越貧窮,負債累累並寄住在朋友家中,而政宇卻飛黃騰達,成為D&T軟體公司代表。愛羅得知前夫已是有錢有勢的富豪,設法進入他的公司做實習生,企圖將對方重新勾引到手。而政宇則使盡方法對付愛羅,以洩當日被她抛棄之恨,兩個別有用心的人就此展開了感情較量。

政宇與合作夥伴D&T軟體公司理事國如珍(金奎吏飾)三年來一直同甘共苦,均已視對方為合適的結婚對象,但愛羅的出現牽動了政宇的所有神經,令如珍產生強烈的危機感;另一邊廂,在政宇公司實習的愛羅引起了公司投資人之子、如珍的弟弟國昇賢(徐康俊飾)的濃厚興趣。這段圍繞愛羅、政宇展開的四角戀情,牽引出一連串浪漫而搞笑的事情,最終四人會如何抉擇?